Delhi reimposes GRAP-3 curbs as air quality turns severe, AQI crosses 400

Delhi reimposes GRAP-3 anti-pollution curbs as AQI hits "severe" category, reaching 409; restrictions include bans on non-essential construction, older diesel vehicles, and hybrid learning for schools up to Class 5. Wazirpur recorded the worst AQI at 443, with several other areas also reporting severe pollution; stagnant winds, vehicular emissions, and crop residue burning cited as causes. Health experts warn of aggravated asthma, reduced lung function, and increased cardiovascular risks due to prolonged exposure; Delhi airport operations remain normal despite low visibility.